Heated screw-extrusion machine



Jan. 13, 1931. D. BRowN HEATED SCREW EXTRUSION MACHINE Filed June '7, 1928 2 Sheets-Sheet 1 ATTORNEY Jan. 13, 1931. D. BROWN 1,788,821

HEATED SCREW EXTRUSION MACHINE Filed June '7, 1928 2 Sheets-Sheet 2 M N N INVENTOR.

A TTORNEYS The recess 29 isadapted for receiving a quantity of packing 8l, such packing being vforced into ysea-ling relation with the -pipe 28 by a nut 32 engaging with the threads 30 and s additionally secured in place by a collar 38 carrying av set screw or the like 34.

`The projecting end 350i the pipe 28 is connected to an inlet pige 36 controlled by. a

valve 37 and itsA forward end 38 is arranged j ger for moving material from said hopper through said die; a revoluble shaft for support-ing said auger, and means for heating said shaft, said means-comprising a stationary steam-conveying pipeY positioned within 'said shaft and about which saidV shaft rein spaced concentric and telescoped relation' to the .bore l5 of the shaft 5 and the similar volves-and forms therewith an annular passageway. 1

5. An extrusion machine comprising an augei-acasing for said auger,'a closed-ended 7 'hollow' shaft for revolving said auger, and a bore of theV tube le, thereby forijningan anp nular passageway 39 which, at one end, opens into a chamber 40 behindthe eXtreme closed end 4l of theV shaft 5 and.,`at its 'opposite end,

- communicates through the perforations 17 and the receiver 18 with an outletpipe 42,' thus forming a complete circuit through which steam or other temperature modifying medium can be conveyed for heating or otherwise controlling the temperature of the contents of the hopperv 2 and the casing 3 from the center outwardly, thev heat being transferred from the shaft 5, through Ythe sleeve Gandits blade 7 to the interior of the mass to thereby control'the temperature Vof stationarypipe-within said shaft, said pipe having'a concentricrelation to said shaft and.forming-'therewith an annular passageway; Y

6: An extrusion machine comprising aY casing, means for'V axially expelling material from said casing and means for carrying said vexpelling means,4 said cari-yin g means having a closed Vforward end andan open rear endg g such mass in the preferable-manner heretof Y fore explained, 4and Vadapt the inachine'to working with materials that freeze 0i solidify ait-atmospheric or room temperatures. Y

Other Amodes of applying the'principle of my invention may be emel'oyedinstead of the `one explained, ,changeV bein@ niadeas regards Y the mechanism hereiiidisclosed, provided the any of 'the' following claimsY means stated by or 4the equivalent ofsiich stated meansbe employed.: f V

I therefore particularly point @arend-distinctly claim as my invention f 1.*In combination with an extrusion ma-'- chine-'comprising ahopper, a diefand ani nular exit passageway; Y. Y Y c extrusion'meansconiprising aV casziig, a closed-endedY hollow expelling linea-ns,

and means associated'. with said' expelling ineans for conducting. a." temperature-modica fying inediuininto' the hollow ofsaid Vexpel- Vlino' means said conductin' means entering CJ 3 b Y v b vauger for moving material from said hopper throughsaicl die; a hollow shaft for supporting saidauger, a pipe within saidshaft, and rfmeans for revolubly supportingfsai-d shaft 1 and stationarily4 supporting said pipe. l 2. In combination with an extriis'ion'ma` f'chine comprising fa hopper, aY die andan auger'ifor movingmaterial from through said die; a hollowshaft-"forv carrysaid hopper the open endl of said expelling means and #forming therewith'a return passageway for said "temperature modifying medium;

9. Aneitrusion `machine'comprising a casing, a closed-ended hollow. expelling'-means, a tubular' meinber entering said expelling -ineans'through its open endandl :1i-*coupling between the open end 'of said expelling means" A'1 and said tubular member. said coupling being adapted to stationarily support said tubular f memberand revolubly support said expelling means.

w Yl0.V An eitrusion' machine comprising a'l ing said auger, a pipe within vrsaid shaft andcoupling between said shaft fand v'said pipe, "saidy coupling 'stationarily Supp-citing said. '11385 fevouby Supporting said shaft, and

iavinglan outlet ccnnejction'with saidV shaft'.

ln combination with an extrusion machine'comprising a hopper, ajdie Land an au- `ger ,for movi-ng material from said' hopper through said die; al revoluble shaft for vsup-` 6D v porting saidV auger, andl nieansrfor heating Y saidjshaft,said ,means comprising a stationf1 aus;

ary steam-conveying pipe positioned within saidshaft.k n p 4. Inv combination with an'` extrusion inacasing, a hollow expellingmeans having aY i closed forward end and' 'an open rear end and an inlet 'pipe extending into said hollow to a point near said closeden'd, said inlet pipe V.forming with said hollow an` outlet vpassagekr'1 way.

fil. An extrusion machine comprising a VIcasing, anV auger foreexpelling ,material from r*Said casing, a thrustbearing for said auger,L and connections to the rear of said thrust' bearing for introducingand withdrawing a i temperature-nio'diiying mediumv to and from Y said auger." A o Y I Y Y Sigiied'byine this4thday of J une, i928. chine comprising a'hop'per, a' die and an aiip A* YY-"Davis BROWN.` Y i 

